๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
Tunneled island pedicle flap
Tunneled island pedicle flap
This modification can be used when the defect and flap pedicle are not immediately adjacent to each other. It allows for preservation of normal tissue in between the flap and the defect. The flap โtunnelsโ underneath this portion of normal skin to fill the defect.24โ26
In one example, Wang et al. used the tunneled island pedicle flap to reconstruct an earlobe with preauricular skin, while preserving the normal section of tissue at the medial edge of the earlobe. This tissue separated the defect from the flap. A โtunnelโ was created underneath this medial edge, allowing for the pedicle to pass through it to reach the defect. This allowed for a good match of the fibrofatty tissue of the earlobe, thus restoring the normal contour and texture of this tissue location.26
The advantage of this flap modification is that it allows for defects to be repaired in a single stage and preservation of normal tissue. The disadvantage of this flap modification is that it increases the risk of trapdoor phenomenon and may add bulkiness to the intervening normal skin.